pmichaud landed Rakudo commits to "Speed up repeated shifts of large lists/arrays by 70%+" noting that "More improvements are coming; this patch just gets a couple of the current big bottlenecks out of the way".

I (raiph) have switched to selected highlights rather than an exhaustive summary and changed some other things. I'd appreciate comments from both #perl6 regulars and those who are just reading these reports saying whether or not these changes are an improvement over last week's report. (Alternatively gmail raiph.mellor.)